[土壤] 潴育层

Into the West Lay down your sweet and 1)weary head Night is falling You’ve come to journey’s end Sleep now Dream of the ones who came before They are calling From across the distant shore Why do y

发表于:2018-11-28 / 阅读(222) / 评论(0) 分类 疯狂英语2004年

Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that conditions on Mars today are not very good for life.

发表于:2018-12-07 / 阅读(130) / 评论(0) 分类 火星生命

These discoveries raised the stakes. Here was a planet similar to our own. Mars might not have cities or civilizations. But it could be home to other smaller life forms like microbes. Chris McKay is N

发表于:2018-12-07 / 阅读(154) / 评论(0) 分类 火星生命

I think it is exciting. Because it would imply that if life arose independently on Mars. The implication is that life is pervasive throughout the universe. This is why Mars has so obsessed scientists.

发表于:2018-12-07 / 阅读(123) / 评论(0) 分类 火星生命

In 2001 a new NASA probe was launched. Called Odyssey, it was sent to Mars to carry out the most detailed analysis ever of the planet’s surface. What it has discovered may be about to answer one of

发表于:2018-12-07 / 阅读(116) / 评论(0) 分类 火星生命

But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough

发表于:2018-12-07 / 阅读(111) / 评论(0) 分类 火星生命

Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is frozen into glaciers. And also like Mars, buried u

发表于:2018-12-07 / 阅读(139) / 评论(0) 分类 火星生命

For Mars to have rivers, it must once have had streams, rain, clouds and an atmosphere, a planet just like the Earth today-if these were rivers. They had to be sure. The answers would come in 1998 wit

发表于:2018-12-07 / 阅读(146) / 评论(0) 分类 火星生命

William Boynton is professor of planetary sciences at the University of Arizona. And he's dedicated his life to looking for water on Mars. The link between life and water is very strong. Even here in

发表于:2018-12-07 / 阅读(140) / 评论(0) 分类 火星生命

'Deepwater Horizon' Honors The Sacrifice Without Sacrificing The Action play pause stop mute unmute max volume 00:0003:02repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update you

发表于:2018-12-18 / 阅读(112) / 评论(0) 分类 2016年NPR美国国家公共电台10月

Of course, any terraforming is still a long way off. The next few expeditions to Mars will definitely be made by machines. NASA, are sending 2 rovers, capable of travelling over 100 meters a day in se

发表于:2019-01-02 / 阅读(129) / 评论(0) 分类 火星生命

Well, hearing that Odyssey had found subsurface water on Mars was enormously exciting for somebody who is involved in planning to send humans to Mars. Water has a number of important uses for us. At t

发表于:2019-01-02 / 阅读(148) / 评论(0) 分类 火星生命

Life on Earth is basically proteins and DNA, so we can wonder if there is life on Mars will also be DNA and proteins, the same type of DNA, the same type of proteins. One might think that DNA is such

发表于:2019-01-02 / 阅读(140) / 评论(0) 分类 火星生命

But there was something even better. Odyssey may not just have found ice. There may also be liquid water, and that means, there could be living creatures there too. Right now, there might be liquid wa

发表于:2019-01-02 / 阅读(161) / 评论(0) 分类 火星生命

But they never got there. The first disappeared into deep space. Another missed its target when its coordinates were confused. One NASA control center was working in metric, the other in feet and inch

发表于:2019-01-02 / 阅读(168) / 评论(0) 分类 火星生命

The ground here is permafrost, a mixture of soil and ice frozen together. A group of Russian scientists have teamed up with NASA to drill down into it in search of microorganisms. It's work that's bee

发表于:2019-01-02 / 阅读(165) / 评论(0) 分类 火星生命

One of these wavelengths corresponds to hydrogen, another wavelength would be iron. Another wavelength would be oxygen. And so you go to the part of the spectrum you are interested in and you see you'

发表于:2019-01-02 / 阅读(153) / 评论(0) 分类 火星生命

RACHEL MARTIN, HOST: Eight years ago today, an explosion on the Deepwater Horizon drilling rig killed 11 people and led to a massive oil spill in the Gulf of Mexico. The accident prompted big changes in how the country regulates offshore drilling. No

发表于:2019-01-16 / 阅读(139) / 评论(0) 分类 2018年NPR美国国家公共电台4月

模仿句子:But there is also another voice on the horizon, a new champion for a different way of thinking. 原文翻译:但目前还有另外的声音,主张捍卫新的思维方式。

发表于:2019-01-23 / 阅读(109) / 评论(0) 分类 英音模仿秀

Though your heart and your soul are giving out When there's nothing left that's real And everything is broken Though the weight of the world tries to drag you down There is hope inside you now So don't give up Because love never fails you His love ne

发表于:2019-02-19 / 阅读(84) / 评论(0) 分类 英文摇滚歌曲
学英语单词
academy-trained
automatic test equipment complex
axis oculi externus
biendor
Black Turtle
blast cock
bureau of economic analysis
calet
caudal angle
compare and contrast
controllability of units
Corynebacterium petrophilum
crew gangway
cross product
Delonal
dog train
duty on hydrocarbon oil
effective respiration
Elsholtzia eriocalyx
executive evaluation
febi
fission-product debris
fixed bed reaction equipment
foose
free of loss
Frey effect
gerlich
hammering device
heat interchanger
heat sensor
heat skin detection
high-waisted
home fries
hyperinnervation
identification of bullet
information structure model
injection phase
inobtainable
jack-pots
journalised
kurtorachic
label expression
lateral cerebralsulcus
leakage detection system
linishing
low-demand
Lymtudor
macrogenerating program
makahiki
man-powered
medium altitude communications satellite
mediumspringgreen
modality of foreign aid
mono-bloc wheel
more transparent
mottled sandstone
mugging
muropeptides
neighbor discovery
nitre oven
nondemonic
nonsaturation magnetic recording
ossus
overpopulate
overpressure type motor
pastel chalk
peak location
phi-bete
Pilea myriantha
pirarucu
Pitman estimator
portioners
power selsyn
programme evaluation and review technique
propyl aldehyde
protest strategy
rabbit's foot
rating parameter
rawness
recrossed
retractable undercarriage
Rhabdura
ridgeling
rohlf
sales-pitch
saphenous
single entry values
specialist block sale
staurotide (staurolite)
stored program control exchange
stundum
Tapahoekoe
tellurious
terrestrial branch
the laity
titanium sponge
two-dimensional flow condition
two-way symmetric accelerator
unit-type
upper track wheel
wait-state generator
zero-profit condition